Created attachment 122981 [details] incorrect value in SUMPRODUCT formula SUMPRODUCT Values in column B evaluate incorrect. Some cells has value only as part of its formula, SUMPRODUCT part is ignored, and some has any big big number.
Created attachment 122982 [details] Screenshot of calc, where is shon cell with formula, and bad values.
Works fine and gives correct result for me with 5.0.5.2. Did you have Open CL enabled?